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F. E. LANGDON. DRAFT EQUALIZER.

Patented May 25, 18 86.

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. WITNESSES v UNITED STAT s PATENT OFFICE.

FRANK'E. LANGDON, OF GRUNDY CENTRE, IOWVA, ASSIGNOR TO JOSEPH (3.

RICE, OF SAME PLACE.

citizen of the United States-of America, residing at Grundy Centre, in the county of DRAFT-EQUALIZER.

To aZZ whom itmay concern:

Be it known that I, FRANK E. LANGDON, a

Grundy and State of Iowa, have invented cer-' tain new and useful Improvements in Draft- Equalizers; and I do hereby declare the following to be a full, clear, and exact desoription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to certain new and useful improvements in draft-equalizers; and

' it consists in the construction and combination of the parts, whereby one horse inay be used on one side of the pole and two or more on the" other side, said device being adapted for use in connection with plows, reapers, selfbinding harvesters, or other devices where it is desirable to overcome the side draft.

In the accompanying drawings, which illustrate my invention, Figure l is a. plan view of my improvement. Fig. 2 is a front view. Fig. 3 is a plan view showing the whiffletrees outv of line, and Fig. 4. is a sectional view taken through the line a; aofFig. l.

A represents a pole or tongue of ordinary construction, which may be attached to the lv wagon or implement in the ordinary manner,

which pole is provided near its rear end with a lever, B, one-third of which is located to one side of the bolt 1), while the other twothirdsprojects on the opposite side. A suitable bent strap, a, which is secured to the pole, isemployed for attaching the lever'B pivotally to the pole.

At a suitable distance in front of the lever B a lever, G, is similarly pivotally secured to the pole A, and from the under side of the pole extends a brace, (3, which is pivotally attached thereto and to the under side of the lever O. This brace 0' will prevent the long end of the lever (J from sagging. The lever G projects a short distance over the pole A, as shown, and at a point equal to one-half the length of the opposite end of the lever is pivotally attached the bars G, the opposite ends of said bars being secured to the short end of the lever B.

Instc" of employing parallel connectingbars, Gy' a single bar having bifurcated ends may be iised.

To the short end of v the lever 0, preferably on the upper side of the same, a link, E, is pivotally attachedthereto, said link being of sufficient length to extend over the pivotpin d, which connects the lever G with the pole, and this link, as well as the donbletree D, is connected to the long end of the lever B by the connecting-bars G.

To the long end of the lever O is attached a double-tree, D, both of the double-trees D D hereinbefore referred to being provided at their ends with clevises, to which are attached single-trees.

By the construction shown in the drawings, one of the horses will be located on one side of the pole, while the other three will be abreast of each other and on the opposite side of the pole. If the horses attached to the double tree I) move forward faster than the horses attached to the double-tree D, they will draw said double-tree forward, which will carry with it the link E, as well as the long endof the lever B, this forwaid movementof the double'tree D drawing the long end of the le ver G, with the double-tree D, backward,thereby putting more strain upon this double-tree. If the double-tree D is moved forward, the opposite movement takes place, and each team is compelled to do its share of work.

It will be noticed that in the organization of ,the parts hereinbefore described the levers B G are pivotally connected to the center of the pole and on a line with each other, and' equalizer; but by removing the 'lonble-tree D and placing a single-tree in its place, and also moving the bar G to the point L and attaching the same at this point, I provide an improved three-horse equalizer. At this point L the bolt which is used to attach the brace G to the lever 0 passes through the same and forms a convenient connecting means.

I claim- 1. In a draft-equalizer, the combination, with a tongue and front and rear levers, each having arms of unequal lengths, of a bar conmeeting the short arm of the rear lever with the long arm of the front lever, a double-tree, a link for connecting the double-tree to the short arm of the front lever, and a bar connecting the short arm of the rear lever with the double-tree, substantially as set forth.

I 2. In a draft equalizer, the combination, with the front and rear levers, substantially as described, of the bar pivoted to the short arm of the rear lever and adjustably secured to the long arm of the front lever, a whiffle- In testimony whereof I affix my signature in 4 presence of two witnesses.

FRANK E. LANGDON.

lVitnesses:

G. B. VAN NEsT, H. L. SIMPsoN.

Correction in Letters Patent No. 342,612.

It is hereby certified that in Letters Patent No. 342,612, granted May 25,1886, upon the application of Frank E. Langdon, of Grundy Centre, Iowa, for an improvement in Draft-Equalizers, an error appears in the printed specification requiring correction, as follows: In line 16, page 2, the word short should read long and that the Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Oflice.

Signed, counter-signed, and sealed this 12th day of November, A. D. 1889.

CYRUS BUSSEY, Assistant Secretary of thejnterior.

[SEAL] Countersigned:

O. E. MITCHELL,

Commissioner of "Patents. 4 

